Crown Princess Mary's Ruby tiara

Since Mary became Crown Princess of Denmark in 2004, she has exclusively worn the ruby parure - which consists of a tiara, necklace, earrings, several brooches, bracelets, a ring and hair clips.

It is, by far, her most glamorous and important tiara and is reserved for the grandest of occasions.

The tiara's accompanying necklace has dangling attachments which can be removed, allowing for differing looks depending on the event.

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Crown Princess Mary's Ruby tiara

The Danish ruby parure (meaning 'set') dates to the coronation of Napoleon Bonaparte in France.

The jewels were made for the wife of one of Napoleon's men, who later became Sweden's king and queen.

They eventually came into the Danish royal family's collection in 1869, when a Swedish princess married Denmark's Frederick VIII in 1869.

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Crown Princess Mary's Ruby tiara

Made up of red rubies and white diamonds, the parure mirrors of the colours of the Danish flag.

It is the tiara worn the most frequently by Crown Princess Mary and is seen each year at one of the royal family's New Year's banquets, including here in 2017.

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Crown Princess Mary's Ruby tiara

The length of the earrings and necklace can be adjusted, allowing for varying looks.

The earrings have attachments that can be worn in a large chandelier-style (slide 9), as simple studs or pearls can be added (slide 8).

Here, Mary wears the earrings with just one drop at Christiansborg Palace on the eve of Queen Margrethe's birthday in 2015.

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Crown Princess Mary's Ruby tiara

Since first wearing the ruby parure in 2004, Mary has had the set modified to suit her head shape and personal taste.

It is worn for the most celebrated events in Denmark's royal calendar, including here at a State Banquet in honour of French President Emmanuel Macron's visit in 2018.

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The Midnight tiara

The Midnight tiara features 31 diamond and moonstone buds and leaves in yellow and white gold, and oxidised silver, which are said to resemble the Australian wattle. The dark colours are reminiscent of the night sky, hence its name.

Mary first wore the tiara in 2009, at a palace gala to celebrate the 75th birthday of her father-in-law Prince Henrik, along with its matching brooch and earrings.

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The Midnight tiara

The Midnight tiara was created by Danish jeweller Charlotte Lynggaard.

The brand - Ole Lynggaard - holds a royal warrant and Mary frequently wears its pieces, which have a distinct Scandinavian look.

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The Midnight tiara

But the Midnight tiara is not part of Mary's personal collection.

Ole Lynggaard retains ownership of the modern piece, and struck a deal with the palace allowing Crown Princess Mary to wear the tiara exclusively.

In 2010, it was the perfect accessory for her teal gown worn to celebrate Queen Margrethe's 70th birthday at Fredensborg Palace.

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The Midnight tiara

Mary reportedly fell in love with the piece when she first saw it at a special jewellery exhibition curated by Ole Lynggaard.

The Midnight tiara was most recently worn by Crown Princess Mary in 2013, for the wedding of Princess Madeleine of Sweden and Christopher O'Neill.

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The Midnight tiara

She paired the tiara with a vibrant red gown by Australian designer Collette Dinnigan.

We wish Crown Princess Mary would wear the Midnight tiara again soon, as it's one of the most striking modern tiaras created in a long time.

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The Edwardian tiara

Crown Princess Mary's Edwardian tiara is one of the most special pieces in her collection.